The invention relates to a mounting system for strand-like functional elements such as cables or lines, in particular for wind power plants, having a main body having strand passageways that are formed by receiving spaces, which have an opening for the insertion of functional elements that can be closed by a cover device, and which define a receiving axis that runs from the outer opening to the inner end of the respective receiving space.
In conventional wind power plants, the nacelle rotatably disposed on the tower, which contains the generator units having the corresponding assemblies, can perform up to three turns before the nacelle is driven back. Strand-shaped operational functional elements such as cables for the removal of generated energy as well as for control, condition monitoring, communication and the like, as well as hose lines etc., which run through the tower into nacelle must therefore be positioned in an orderly manner and fixed, in particular in the region hanging out of the nacelle into the tower. In order to ensure operational reliability, cables and the like in the loops hanging in the tower must be kept at a distance such that they do not rub against one another during rotational movements. In the case of the large number of strand-like functional elements used in modern wind power plants, which must be accommodated in the strand passageways of a corresponding main body, the main body in question must have significant dimensions. This regularly results in high manufacturing costs for the manufacturing processes under consideration, such as compression or injection molding of plastics or metal alloys, when manufacturing components of such a large size.
Given these difficulties, the object of the invention is to provide a mounting system of the type under consideration, which enables low-cost manufacturing.
This object is achieved according to the invention by a mounting system having the features of claim 1 in its entirety.
Accordingly, an essential feature of the invention consists of the fact that the main body is formed from at least two sectional elements, which each have strand passageways and which can be coupled to one another at at least one junction point, wherein the receiving axes of successive strand passageways on the main body diverge outward. Because a main body is provided, which is made up of sectional elements, this eliminates the need to manufacture the main body in the form of a component having large dimensions, which in the prior art, make a large tool and correspondingly large injection molding machine necessary. Instead, the use of smaller machine units simplifies and lowers the cost of production. Due to the fact that in addition, the receiving axes of successive strand passageways on the main body diverge outward, the main body has a curved outer form, which is more favorable for the formation of strand bundles such as those that hang out of the nacelle into the tower as compared to conventional mounting systems having flat, strip-like main bodies.
In particular, the main body may advantageously have the form of a star-shaped body, on which strand passageways are disposed along an imaginary curved line.
In the case of such a body having curved peripheral regions, the cover device, which closes the openings of the receiving spaces of the strand passageways, may advantageously also have a tension band as an additional element, which encloses the strand member and forms a safeguard against short-circuit forces that may possibly arise during operation.
For the configuration of the star-shaped body, the arrangement may be such that at least two of the sectional elements are identically formed, for example in that the entire star-shaped body is made up of two sectional elements designed as interchangeable parts.
Alternatively, a star-shaped body formed out of more than two sectional elements may be provided, in which all sectional elements are identically formed.
In terms of the coupling of the sectional elements, the arrangement may be such that at least one attachment point of the sectional elements is formed as a hinge joint that makes a relative pivotal movement of the sectional elements possible. In order to form the main body, sectional elements or groups of sectional elements connected to one another can thereby by folded out in such a way that an additional, central receiving space located in the interior of the strand member is created therebetween, in which an additional functional element can be installed.
The strand passageways of the sectional elements may advantageously have receiving spaces in the form of trough-like recesses, wherein the cover device has holding members, which can be latched by means of the appropriate sectional element for the pre-fixation of functional elements that are inserted into the strand passageways at the opening of the respective receiving spaces. This facilitates the assembly process in that functional elements can be comfortably inserted into the strand passageways in succession and secured there against falling out before the fixing process is finally completed, for example by means of the tension band enclosing the holding members.
In especially advantageous embodiments, the sectional elements are designed in the form of quadrants, which can be combined to form a star-shaped body in which the openings of the receiving spaces are located in a circular line that extends along the outer periphery of the star-shaped body. The inner faces of the receiving spaces facing away from the opening of the strand passageways may be delimited by a wall, which extends along a quarter-circle so that said walls delimit a central opening, which forms a receiving space for the installation of an additional functional element.
The arrangement may be advantageously made in such a way that an inner insert may be provided that can be accommodated in the central opening for the formation of an additional strand passageway, said inner insert forming at least one additional strand passageway, or one or a plurality of further additional strand passageways.
The invention is described in detail below based on the embodiments shown in the drawings.
Shown are:
FIG. 1 a side view of an embodiment of the mounting system according to the invention, wherein a bundle of three cables is inserted into each of two strand passageways;
FIG. 2 a partial view of the embodiment, wherein four quadrants, which form the main body as a star-shaped body, are combined into a pair of sectional elements, which are shown unfolded at a hinge-like articulation point;
FIG. 3 a view of a single quadrant drawn in a somewhat larger scale;
FIG. 4 a perspective side view of the quadrant shown in FIG. 3;
FIG. 5 a side view of a second embodiment of the mounting system according to the invention, without strand-like functional elements inserted into the strand passageways;
FIG. 6 a perspective side view of the embodiment in FIG. 5;
FIG. 7 an exploded side view of the sectional elements from FIG. 5 and two additional elements that can be attached between the sectional elements, drawn in a somewhat smaller scale than in FIG. 5;
FIG. 8 a side view of the sectional elements that can be combined into a star-shaped body pursuant to a third embodiment and the additional elements from FIG. 7 and
FIG. 9 a side view of the embodiment corresponding to FIG. 1, wherein an inner insert is accommodated in the central opening of the star-shaped body.
In FIG. 1, which shows a first embodiment of the invention as a whole, a main body in the form of a star-shaped body 1 is provided, along the peripheral regions of which strand passageways 3 in the form of trough-like recesses are formed, in which strand-like functional elements that are to be fastened can be inserted. By way of example, FIG. 1 only shows functional elements inserted into two strand passageways 3, which elements each comprise a cable bundle 5 comprising three cables, said cable bundles being inserted into the receiving space 7 formed in the strand passageways 3. As made clear in FIG. 1, adapter inserts 9 are inserted into some of the strand passageways 3 in order to facilitate the fixing of functional elements having different shapes and dimensions, in that the shape and dimension of the respective receiving space 7 is adapted to the requirements.
FIGS. 2 to 4 show, in greater detail, the sectional elements 11 formed as so-called carry-over parts, which can be combined into the star-shaped body 1. In the present example, four sectional elements 11 are provided, each of which have two strand passageways 3 in the form of trough-like recesses with an external opening 13. The sectional elements 11 are designed such that they are curved, as quadrants of what in the present case is a round star-shaped body 1. The receiving axes 15 defined by the receiving spaces 7, which axes extend from the outer opening 13 to the inner end 17 of the strand passageways 3, see FIG. 3, diverge to the outside of the sectional element 11. The sectional elements 11 are laterally defined by walls, which extend from radial planes, at which walls the sectional elements 11 can be coupled to one another by means of junction points 21. The sectional elements 11 are delimited at the inner face thereof facing away from openings 13 of the strand passageways 3 by a wall 23, which extends along a quarter-circle. FIG. 2 shows that two sectional elements 11 are connected at each of the junction points 21 into a pair comprising two quadrants, and that both pairs are pivotably connected to one another at a junction point, which is designed as a hinge joint 25.
When the pairs of quadrants are folded together from the spread pivoted position shown in FIG. 2 and connected into the closed star-shaped body 1, a closed central opening is formed 27, in which an inner insert 29 can be accommodated and can be secured therein by folding together the pairs of quadrants. As shown in FIG. 9, such an inner insert 29 may form additional strand passageways 31, 33, 35 so that additional strand-like functional elements can be run through the central opening 27.
As can be seen in FIG. 4 in particular, the junction points 21 are designed in such a way that projections 37 and depressions 39 are formed in the walls 19, which are disposed such that they alternate so that in the installed state, a kind of toothing is formed that can absorb the forces. The outer surfaces 41 adjoining the openings 13 of the strand passageways 3 have a curvature that corresponds to a circular arc for a tension band 43 enclosing the star-shaped body 1, which tension band can be tightened by means of a turnbuckle 45. Tabs 47 that project from the surface 41 are located near the walls 19 for the lateral guidance of the tension band 43.
A holding member 49 is provided for the closure of each of the openings 13 of the strand passageways 3, said holding member being hinged with a joint fork not shown in the drawing at a pivot point 51 at the opening 13 of the appropriate strand passageway 3 in such a way that these holding members can be pivoted out of a pivoting position, that releases the opening 13, into the position shown in FIGS. 1 and 9, in which said holding members close the strand passageway 3. These holding members 49 have latch tongues 53 (which are only partially numbered in FIGS. 1 and 9), with which the holding members 49 can be latched in the closed position for the pre-fixation of functional elements that are inserted into the strand passageways 3, before the tension band 43 is tightened over the top of the holding members 49. The holding members 49 have spring-loaded movable pressure members 55, which are only partially numbered in FIGS. 1 and 9 and exert a holding force on the functional elements such as cables or cable bundles 5 that are inserted in the strand passageways 3. A mounting system is thereby implemented, in which the respective star-shaped body 1 serves in the manner of a spacer for a loop of cables and/or lines forming loops, hanging out of the nacelle into the tower, thereby preventing the cables or lines from rubbing against one another during rotational movements. In addition, the cables or lines can be reliably guided and secured by means of the mounting system even within the segment-like tower structure, which represents a substantial facilitation in the installation of such towers.
FIGS. 5 and 6 show an embodiment in which the star-shaped body 1 is formed out of two identically designed sectional elements 12, each of which have two strand passageways 3 that, like the other components of these sectional elements 12, are designed in the same manner as the sectional elements 11 of the preceding example. The difference lies in the fact that, unlike the quadrants in the preceding example, the sectional elements 12 do not form a complete star when they are coupled to one another, but instead, free spaces 57 are formed between the sectional elements 12. The sectional elements 12 are connected at junction points 21, which are designed, as in the first embodiment, by means of screws that are screwed into the material of the sectional elements 12, as is also the case in the first embodiment, wherein, in the case of the second embodiment in FIGS. 5 and 6, only the junction points 21 that are adjacent to the inner wall 23 junction points 21 are used. Just as in the first embodiment, pivotable holding members 49 are hinged at the openings of the strand passageways 3, which holding members can be latched in the closed position, wherein, as in the first embodiment, a tension band 43 is passed over the top of the holding members 49.
FIGS. 7 and 8 illustrate a further embodiment in the form of a further development of the example pursuant to FIGS. 5 and 6 described above, wherein additional elements 59 are provided for the formation of two additional strand passageways 3, which can be used in the free spaces 57 between the sectional elements 12 and by means of the junction points 21 can be fixed thereto. Each of the additional elements 59 forms a strand passageway 3 and, together with the sectional elements 12, form a star-shaped body 1 having a slightly oval outer contour.
With the above mentioned sectional elements being designed as identical components, different configurations can therefore be produced at strand passageways, for example such as a configuration according to FIGS. 1 and 2 or such as a configuration according to FIGS. 5 and 6. If the above described sectional elements are designed such that they are smaller, so that these elements only cover an arc segment of 10° to 45°, preferably of approximately 30°, it will be possible to achieve a greater modular variance and to implement different fixing systems (not shown) with a plurality of sectional elements, in the manner of a modular system.
Patent Application
20150001354
